The effect of quorum sensing and extracellular proteins on the microbial attachment of aerobic granular activated sludge

被引：107

作者：

Lv, Junping ^{[1
]}

Wang, Yaqin ^{[1
]}

Zhong, Chen ^{[1
]}

Li, Yaochen ^{[1
]}

Hao, Wen ^{[2
]}

Zhu, Jianrong ^{[1
]}

机构：

[1] Beijing Normal Univ, Sch Environm, Beijing 100875, Peoples R China

[2] State Key Lab Water Simulat, Beijing 100875, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2014年 / 152卷

基金：

中国国家自然科学基金;

关键词：

Microbial attachment; Aerobic granular activated sludge; Quorum sensing; Extracellular proteins; Vanillin; POLYMERIC SUBSTANCES EPS; WASTE-WATER TREATMENT; BIOFILM FORMATION; PSEUDOMONAS-AERUGINOSA; EXOPOLYSACCHARIDE PRODUCTION; AEROMONAS-HYDROPHILA; SENSITIVE METHOD; STABILITY; ROLES; FLOCS;

D O I：

10.1016/j.biortech.2013.10.097

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

In this study, vanillin, a quorum sensing (QS) blocker, and proteinase K were employed to investigate the effect of QS and extracellular proteins on the microbial attachment of aerobic granular activated sludge (AGAS). Results clearly showed that both vanillin and proteinase K could reduce attachment potential of AGAS, and the combined use of them was more effective in reducing attachment biomass of AGAS. The contents of N-acylhomoserine lactones (AHLs) and extracellular proteins were reduced in the presence of vanillin and proteinase K. Besides, it was found that extracellular proteins could promote microbial attachment of AGAS, and it was also revealed that AHLs-mediated QS might be involved in microbial attachment of AGAS through the regulation of extracellular proteins. This study suggested that both QS and extracellular proteins might play important roles in the development of "AGAS biofilm" from the perspective of the biofilm. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：53 / 58

页数：6

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